Attachment for moving-picture machines



B. G. ROSS AND O. BRINDLEY. ATTACHMENT FOR MOVING PiCTURE MACHI APPLlCATlON FILED SEPT, 18. 1919. RENEWED MAR. 1 1,383,428.

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Patented July 5, 1921.

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B. G. ROSS AND 0. BRINDLEY. ATTACHMENT FOR MOVING PICTURE MACHINES. APPLICATION FlLED SEPT=18, i919- RENEWED MAR. 18.1921.

1,383,428. Patented July 5, 1921.

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J ATTORNEY.

UNITED STATES PATENT OFFICE.

ATTACHMENT FOR MOVING-PICTURE MA Application filed September 18, 1919, Serial No. 324,537. Renewed Marc T 0 all whom it may concern Be it known that we, BYERS Specification of Letters Patent.

GILLESPIE Ross and OLIVER BRINDLEY, citizens of the United States, the county of sylvania,

residing at Pit Allegheny have invented a new tsburgh, in

and State of Pennand useful Improvement in Attachments for Moving- Picture' Machines, the following is a specification.

of which improvement Our invention relates to improvements in attachments for moving picture machines and particularly to means for shutter of one machine substant taneously with the opening of th the other machine.

closing the ially simule shutter of The object of the invention is to employ a pair of moving picture machines, each of which is provided with the shutter and to utilize means in tion by which thrown into operative screen; substantially other machine is thrown out of 0 lation with said screen, whereby pictures, comprising a usual safety thei one of said machines is relation with the simultaneously the r operaperative re a series of number of reels, can

be thrown upon the screen without the slightest apparent intermission. lVe accomplish this by means of the device hereinafter more particularly described, reference being had to the accompanying drawings forming part hereof, in wh Figure l-is a rear elevation 0 portion of a moving our improvement applied.

Fig. 2is a side elevation of Fig. 3is a plan view.

Fig. 1-is a front elevation.

Fig. 5-is a side elevation of machines upon its ordinary base Fig. 6-is a rear, diagramma two machines with our plied.

Fig. Tis a 1chf the upper picture machine, with the same.

one of the or support. tic view of improvement applan view of the same.

Referring to the said drawings, 1 is a foundation or frame which may be of any suitable construction, upon which the alined picture machines 2, the wall of the compartment in 3, are supported; 4 is which said machines are located, upon which is secured in any suitable manner plug 5 for port of electrical conductors 6,

plate having a downward projecting (1, provided with orifices b, for tl the sup- 7. 8 is a 1e reception of bolts or other suitable means of attaching the same to the frame of the ma respectively. In the upper side chines, 2, 3, of each of CHINES.

Patented July 5, 1921. 11 18, 1921.

Serial No. 453,480.

said plates an opening 0 is formed which is controlled by a side of each said magnets 10 a cal conductors, '6, 11 is pivotally m plates, closely adj said magnets, and

is adapted to engage magnets, the lower end of the arm 12, the

shutter, 9. of said plates any usual construction is mounted.

Upon the lower a magnet, 10, of The re connected to the electri- 7, respectively. An arm ounted upon each of said acent to one end of each of the upper end of the arm when actuated by said said arm 12 being pivot-ally secured upon said plate immediately he upper end of engage when actuated downwardly PIOJGCUIIT above the arm 11. said arm 12 is adapted to by said arm 11 the 6 member (Z of the crank whereby the horizontally disposed member 6, of said pin, f, secured in crank, engages against a the forward end of the shutter, whereby the said shutter is elevated when said arms and crank are actuated by the magnets.

Upon the side of said plates opposite that upon whi ch said magnets are supported, the

actuating mechanism is supported or secured. The said mechanism comprises the operating lever 13, the free end of which rests upon the bracket 14, which is secured to and projects fr opposite end of to the vertically (1 end of which te om each of said plates, the

said lev er being connected isposed lever 15, the upper rminates in a hooked or bifurcated portion which straddles the cylindrical portion the collar, 17, is slidably mount of the machine by said collar. whereby when into the position 1T,.and the said the said lever, 13, is thrown of a member comprising and the gear wheel, 18, which ed on the power shaft, 16, means of a spline between gear wheel, 18,

shown in solid lines, Fig.

{3, the vertically disposed lever, 15, is shifted in an opposite direction and wheel, 18. into me which is mounted said plate. 8,

the said power sh bearings formed The said side thereof mounted on said and transmits mounted on the plate 8. The said gear wheel, 21,

carries the gear sh with the gear wheel, 21, on the stud, 22, and on the thereby transmitting power from the shaft, 16. to said gear wheel, 21, aft, 16, being supported in in the collars, 20 and 19. has attached to one a small gear wheel 23, which is stud 22, and meshes with power to the gear wheel 2+1 stud, 25, secured in said gear 24 has secured thereto the member 26, which is preferably integral with said member and constitutes a double cam, z 6.; its periphery constitutes a cam and upon one side a cam projection, 27, is secured, the function of which is to automatically throw gear wheel, 18, out of mesh with gear wheel, 21, at the conclusion of the run of a reel or film. In its rotation, the periphery cam actuates the arm, 28, one end of which rests upon the periphery of said member 26, the opposite end being attached to the vertically disposed rod 29, 29, the lower end of which in machine 2 is connected to the arm 30, mounted on shaft 31, and in machine 3 the lower end of said rod 29 is connected to the similar arm, 32, mounted on similar shaft, 33. The said shafts 31 and 33 are each provided with a finger, 34, 35, respectively, mounted on the extreme inner end thereof, which is adapted to alternately engage against the dual push button, 36, when said shafts are partially rotated. The said push button controls an electric current carried by said conductors, 6, 7, and is operated, as specified, for the purpose of conveying electric current alternately to, and cutting the same out from, the magnets for the purpose of alternately energizing and deenergizing the same, whereby the shutter which controls the openings, C, C, are alternately elevated and permitted to close when a reel has been finished on either of the machines. This operation is erformed in such manner that with the closing of one of said openings the shutter of the other machine is simultaneously opened, the shutter falling by gravity when the magnet controlling the same is denergized. This operation is done substantially instantaneous so that there is no perceptible intermission between the closone shutter and the opening of the ing of The said shafts 31 and 33 are also other.

provided with foot lever, 37, 38, by the op eration of which the said shafts are rotated and the push button operated alternately by said finger 3 1, 35, and electric current is transmitted to, and out out from, either of the magnets at will.

The operation of the device is as follows: One of the machines, which, for the purpose of illustration, we will call No. 1, which is the machineshown to the left hand of Fig. 6, being in operation with its magnet deenergized, the operator will proceed to thread or charge machine No. 2 in the usual manner to start and when said machine N0. 2 is ready with its magnet energized, move operating lever, 13, to the position shown in solid lines, Fig. No. 1 is almost exhausted, that is to say,

3, when the film in machine when there remains about two feet of the film still unfed. The operation of throwing the horizontal lever into the position shown in solid lines causes the sliding gear to engage and transmit power to the double cam, which on one-half revolution throws the switch, cutting current out from the magnet of machine No. 2, causing the shutter thereof to drop and at the same time energizingthe magnet of machine No. 1, operating the shutter to closed position, thereby throw- 1ng machine No. 1 out of operation and machine No. 2 into operation, with relation to the screen. The completion of the other half revolution of the cam wheel brings the proecting cam, 27, into contact with the operating lever of machine No. 2 throwing the sliding gear out of ing to remain idle with relation to the machine until this operation is repeated, which may be done as often as required. It is understood that upon the completion of the film in machine No. 2, machine No. 1 is operated in the same manner and the operation, as before stated, repeated as long as required.

One of the principal advantages of our invention is that one operator is dispensed with and better results obtained than when two operators are independently operating independent machines.

Having described our invention what we desire to secure by Letters Patent, is:

1. The combination of a pair of picture machines, each of which is provided with a magnetically controlled aperture shutter, a magnet mounted on each of said machines, means to alternately simultaneously energize one of said magnets and denergize the other and means operated by said magnets to control said shutters.

2. The combination of a pair of picture machines each of which is provided with an aperture shutter and a magnet, means operable by said magnet for closing one of the apertures simultaneously with the opening of the other aperture shutter and manually controlled means for actuating the means for automatically energizing either one of said magnets and simultaneously denergizing the remaining magnet.

In testimony whereof, we have hereunto signed our names in the presence of two subscribing witnesses.

BYERS GILLESPIE ROSS. OLIVER BRINDLEY. In the presence of- FRANK E. Kos'rons, NICHOLAS J TAPPE.

mesh, causing the gearv 

